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[BackupPC NOOB] Removeable hdds, backup strategy Questions
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Post [BackupPC NOOB] Removeable hdds, backup strategy Questions 
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Les Mikesell wrote:
| On Tue, 2004-08-10 at 12:18, Mark D. Montgomery II wrote:
|
|
|>1. Is this a logical backup strategy?
|
|
| Partimage/ghost is probably the right approach for a critical
| windows box.

Yah. I'm thinking I could dump the image file on the BOSS so it would
be included in the full backups.

|
|
|>2. Would this be easy enough to do with BackupPC?
|
|
| Yes, for everything except bare-metal restore of windows.
|
|
|>3. Does anyone know if those drive bays can actually hot swap under
|>linux (I'm assuming it would a matter of unmount drive, unload a module,
|>pull drive, put new drive, load module, mount drive)?
|
|
| 'Hot swap' just means you won't fry the hardware. I don't know how
| to make Linux rescan for IDE drives.
|
|
|>If not, I can always put 2 or 3 of the bays in the machine if needed and
|>just shut down to swap disks.
|
|
| Or, put a firewire card in the machine and get external firewire
| adapter/cases for the drives ($40 to $100 each).
|
|
|>4. Assuming this can be done, how would I set it up?
|>One copy of BackupPC with tweaks to work on a separate disk?
|>Multiple copies of BackupPC, each on a separate disk?
|>Something else?
|
|
| I'm not far enough along to have all the details but far enough
| that I'm convinced this scheme will work:
| - Create a Raid 1 mirror partition where you install all of
| backuppc. Do this even if you start with a single drive.
| - Periodically shut down backuppc, unmount the partition,
| break the mirror, swap drives, and resync the raid to
| the new drive.
| I've set up one 250 gig IDE internally and will probably use
| 3 external firewire drives for the rotation. (One off-site,
| one running mirror, one in transit). It takes 7 or 8
| hours for a new drive to sync (but would be less for smaller
| drives). This should work for IDE trays too, but I'd plan on
| rebooting for the swap. I'll probably set up another
| machine so it will be easy to grab older files from the
| drive(s) not currently in use. I may even try just
| breaking the raid without unmounting, since the filesystem
| journal should fix things anyway like it would if you
| lost power at that point.
|


Ok. I'm looking at the raid options now.
And digesting all this info. Smile
Thanks.
Mark II


| ---
| Les Mikesell
| les < at > futuresource.com
|
|
|
|
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- --
END
- -----------------------------------
TechieM2 (Mark D. Montgomery II)
https://techiem2.no-ip.com
techiem2 < at > techiem2.net
Isaiah 40:28-31
- -----------------------------------
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The Internet: Designed for UNIX.

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Post [BackupPC NOOB] Removeable hdds, backup strategy Questions 
Les Mikesell wrote, On 8/10/2004 5:04 PM:

Keep in mind that the time the offsite drive is going to be
needed is after a disaster that just destroyed the PC that
wrote it. Do you know if there is any magic in the 3ware
to identify the mirrored drives? Can you take one drive
out and access the contents on a normal IDE controller or
even a different 3ware? If that works, it might be a better
way to go, but so far I like the software-mirrored copy
to an external usb/firewire case. That takes care of the
hot-swap business and I can hook the usb to my laptop if
necessary to grab some files.

I'm pretty sure that there is some sort of "magic" on the drives which
identifies what part of an array the drive came from, and you do need a
3ware controller to read from them.

-Dave


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